<template>
    <div style="background-color: darkturquoise;">
        {{ message }}
        <button @click="greet">问候</button>
    </div>
</template>


<script>
export default {
    data() {
        return {
           message:'hello,friend!'
        }
    },
    methods: {
        greet(){
            this.message='hello,'+this.$attrs.name+'!!!'
        }
    },
}
</script>